Yo-yo



FIG. 1 is a perspective view of a yo-yo embodying my design;

FIG. 2 is a right side-elevation view thereof, the left side-elevation view being identical thereto;

FIG. 3 is a front elevation view thereof, the rear elevation view, the top plan view and the bottom plan view being identical thereto;

FIG. 4 is a right side-elevation view of a second embodiment of my new design, the left side-elevation view being identical thereto and the front elevation, rear elevation, top plan and bottom plan views being identical to FIG. 3; and,

FIG. 5 is a right side-elevation view of a third embodiment of my new design, the left side-elevation view being identical thereto, the front elevation, rear elevation, top plan and botom plan views being identical to FIG. 3. 

The ornamental design for a yo-yo, as shown. 